Category: virtual machines

• https://pragprog.com/titles/bhcldev/ – “Small, Sharp Software Tools” – I followed the instructions in chapter “Creating an Ubuntu Virtual Machine with VirtualBox”
• my host OS: macOS …
• I chose to use the current Ubuntu LTS release (20*) as opposed to the 18* one mentioned in the book – on my 2nd try I surfed to kubuntu.org and download their ISO image
• I chose the minimal installation
• the minimal installation works

Task: resizing the VM window vs. resizing the Ubuntu desktop inside

• the related magic lives within VBoxGuestAdditions.iso (supporting “any” OS and OS flavour)
• add VBoxGuestAdditions.iso to the respective VM as optical device!
• the respective guest OS will mount the optical device and hopefully autorun “something”
• because I had chosen the minimal installation, the 1st mounting resulted in complaining about missing utilities resp. packages: gcc, make, perl
• “sudo apt-get install gcc” led to another complaint and the suggestion to execute this:
• “sudo dpkg –confgure -a”
• now again: “sudo apt-get install …” for: gcc, make, perl
• after rebooting the guest OS: the Ubuntu desktop inside resizes, if you resize the VM window

Task: get familiar with the Gnome desktop’s concept of workspaces!

• the Activities button leads displaying “the Dash” with thumbnails of the running workspaces
• “the Dash” lets you reorder the running workspaces
• https://help.gnome.org/users/gnome-help/stable/shell-keyboard-shortcuts.html.en
• read the desktop’s help text on keyboard shortcuts!
• CAVEAT: maybe I should switch to KDE and Kubuntu instead (as I have used KDE for quite some time now, far more than Gnome):
• https://kubuntu.org

Task: get my banking application running!

• my banking application is implemented in Perl, so for installing Perl modules through the utility cpanm install the resp. Debian package:
• “sudo apt-get install …” for: cpanm
• then “cpanm …” for: JSON, Getopt::ArgvFile, XML::Simple